:root {
            --primary-color: #1a56db;
            --secondary-color: #046c4e;
            --accent-color: #f59e0b;
            --dark-color: #1f2937;
            --light-color: #f9fafb;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #374151;
            line-height: 1.7;
        }
        .gradient-bg {
            background: linear-gradient(135deg, #1a56db 0%, #3b82f6 100%);
        }
        .section-padding {
            padding: 5rem 0;
        }
        .hero-section {
            min-height: 85vh;
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .section-title {
            position: relative;
            padding-bottom: 1rem;
            margin-bottom: 3rem;
            text-align: center;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
        }
        .card-hover {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1) !important;
        }
        .service-icon {
            width: 80px;
            height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            background: linear-gradient(135deg, var(--primary-color), #60a5fa);
            border-radius: 50%;
            color: white;
            font-size: 2rem;
        }
        .flink {
            display: inline-block;
            padding: 0.5rem 1.5rem;
            margin: 0.5rem;
            background-color: #f3f4f6;
            border-radius: 50px;
            color: #4b5563;
            text-decoration: none;
            transition: all 0.3s ease;
            border: 1px solid #e5e7eb;
        }
        .flink:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 86, 219, 0.2);
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
        }
        .contact-info {
            padding: 1.5rem;
            border-radius: 10px;
            background-color: #f8fafc;
            border-left: 4px solid var(--primary-color);
        }
        .footer {
            background-color: var(--dark-color);
            color: #d1d5db;
        }
        .footer a {
            color: #d1d5db;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .footer a:hover {
            color: white;
        }
        .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--primary-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
        }
        .timeline-content {
            padding: 20px 30px;
            background-color: white;
            position: relative;
            border-radius: 6px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        @media screen and (max-width: 768px) {
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 700;
            color: var(--primary-color);
            line-height: 1;
        }
        .client-logo {
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s ease;
        }
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .news-card {
            height: 100%;
            border: 1px solid #e5e7eb;
            border-radius: 10px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .news-card:hover {
            border-color: var(--primary-color);
        }
        .news-date {
            position: absolute;
            top: 15px;
            left: 15px;
            background-color: var(--primary-color);
            color: white;
            padding: 5px 15px;
            border-radius: 30px;
            font-size: 0.9rem;
        }